Washington, February 27: The European Society of Cardiology has warned that elderly people, who regularly report feeling sleepy during the day, may be at an increased risk of dying from cardiovascular disease.

The warning comes following the publication of a French study by the American Heart Association in the journal Stroke.

Washington - US President Barack Obama on Thursday outlined a 2010 budget and projections for the next 10 years, offering a look at how he hopes to revive the embattled US economy while completing a series of ambitious priorities he set out on the campaign trail.

A biochemical analysis of a rare Clovis-era stone tool cache recently unearthed in the city limits of Boulder, Colorado, in US, indicates some of the implements were used to butcher ice-age camels and horses that roamed North America until their extinction about 13,000 years ago.

The study, conducted by University of Colorado researchers, is the first to identify protein residue from extinct camels on North American stone tools and only the second to identify horse protein residue on a Clovis-age tool.

According to CU-Boulder Anthropology Professor Douglas Bamforth, who led the study, the cache is one of only a handful of Clovis-age artifact caches that have been unearthed in North America.

Genomic analysis has confirmed that human remains found in the Ural Mountains in July 2007 are indeed those of the two "missing" children of Nicholas II, the last czar of Russia, whose family was murdered in 1918 during the Bolshevik Revolution.

The finding lays rest to a 90-year-old mystery that involved nobility, revolution, murder and the long-romanticized story of a child's escape from the firing squad.

It has been suggested in a new study that at least 184 mm (7.2 inches) of sea level rise will occur in the next 100 years through melting of the world's mountain glaciers and ice caps, even if climate does not continue to warm.

Glaciers and ice caps can be split into regions where snow is accumulated and regions where snow and ice melt. If more snow accumulates than melts, the glacier will advance and grow larger.

Currently, accumulation areas for mountain glaciers are very small. Melting rates are surpassing accumulation rates, leading to glacier thinning and retreat.